Learning to speak
There are a lot of wishful thinkers out there who think their babies are saying mama at very young ages. I did some reading, and found out that the word mama is the same or very similar in many languages. Why? Because mama is universally one of the first things babies learn how to say. Parents then associate these first sounds with themselves. Here we are thinking we're teaching our babies to say mama and papa when really they're teaching us. Cool.